Question

A thirsty crow wants to raise the level of water in a cylindrical container so that it can reach the water with its beak.

Answer 1

Answer:

the first option that it shows you. i did the test i got 100

Step-by-step explanation:

Answer 2

Step-by-step explanation:

calculate volume(V1) of each pebble whose diameter is 1/2 inches.

calculate the volume of increased level portion(V2) height=9-(6+1)=2inches and diameter 2inches.

Then,

Use formula,

N=V2/V1